Results 21 to 30 of about 27,716 (308)

Evaluation of various fluid-film models for use in the analysis of squeeze film dampers with a central groove [PDF]

, 2002
Experimental vibration responses of squeeze film dampers (SFDs) are obtained with four different central groove depths, two types of lubricant and various unbalance levels.
Hill, M., M. Hill, Siew, C.C., Holmes, R., C.C. Siew, R. Holmes   +5 more
core   +1 more source

Aero-Engine Rotor Assembly Process Optimization Based on Improved Harris Hawk Algorithm

Aerospace, 2022
Multi-stage disc rotor assembly is an important part of the aero-engine rotor manufacturing process. To solve the problem that excessive unbalance of assembly affects the vibration of the whole machine, this paper presents an optimization method for aero-
Bin Zhang, Hongyi Lu, Shun Liu, Yucheng Yang, Doudou Sang   +4 more
doaj   +1 more source

MODELING OF THE MACHINE FOR THE BALANCING OF THE ROTOR IN THE ANSYS SOFTWARE COMPLEX

Известия высших учебных заведений: Проблемы энергетики, 2018
An imbalance appears during the manufacture, operation and maintenance of power equipment. The rotor imbalance arises due to the unbalanced masses of the rotor which leads to the emergence of variable loads on the supports and bending of the rotor.
I. R. Tazeyev, S. O. Gaponenko, A. E. Kondratiev, A. N. Zamaliev   +3 more
doaj   +1 more source

Research on Unbalanced Vibration Suppression Method for Coupled Cantilever Dual-Rotor System

Machines, 2022
The cantilever dual-rotor system is a typical structure of the blade output end of the open rotor engine and the coaxial output turboshaft engine. The excessive unbalanced vibration of a coupled cantilever dual-rotor system is one of the main factors ...
Jiaqiao Lu, Xin Zhang, Xin Pan, Meng Zhang   +3 more
doaj   +1 more source

A Decoupling Algorithm-Based Technology for Predicting and Regulating the Unbalance of Aircraft Rotor Assembly Considering Manufacturing Errors

Machines, 2023
Rotor unbalance is the most important factor affecting the dynamic performance of aircraft engines. The existing unbalance prediction and control methods are insufficient for multi-stage rotors.
Yingjie Zhao, Xiaokai Mu, Jian Liu, Qingchao Sun, Ping Zhou, Guozhen Fang   +5 more
doaj   +1 more source

Dynamic Balance Method for Grading the Chain Drive Double Threshing Drum of a Combine Harvester

Applied Sciences, 2020
Although the individual threshing drum of a combine harvester was balanced on a dynamic balancing machine before it is assembled, there were still unbalances after multiple drums were assembled with the chain drive. In this paper, the double drums with a
Zhong Tang, Xiyao Li, Xin Liu, Hui Ren, Biao Zhang   +4 more
doaj   +1 more source

Predicting voltage unbalance impacts of Plug-in electric vehicles penetration in residential Low-voltage distribution networks [PDF]

, 2013
Plug-in electric vehicles will soon be connected to residential distribution networks in high quantities and will add to already overburdened residential feeders.
Ghosh, A., Zare, F., Ghosh, Arindam, Zare, Firuz, Shahnia, Farhad, Ledwich, Gerard, Shahnia, F., Ledwich, G.   +7 more
core   +1 more source

Effects of Vibration Direction, Feature Selection, and the SVM Kernel on Unbalance Fault Classification

Machines
In this study, the combined influence of vibration direction, feature selection strategy, and the support vector machine (SVM) kernel on the classification accuracy of unbalance faults was investigated.
Mine Ateş, Barış Erkuş
doaj   +1 more source

An overview of unbalance compensation techniques using power electronic converters for active distribution systems with renewable generation

, 2020
In many residential and commercial low voltage (LV) networks, three-phase four-wire distribution systems are used to accommodate single- and three-phase customer loads and renewable energy sources (RES).
Rafi, Fida Hasan Md, Hossain, MJ, Rahman, Md Shamiur, Taghizadeh, Seyedfoad   +3 more
core   +1 more source

Congestion Management Method of Low-Voltage Active Distribution Networks Based on Distribution Locational Marginal Price

IEEE Access, 2019
Large-scale distributed energy resources, such as electric vehicles (EVs) asymmetric access to low-voltage distribution systems, may cause security problems, including line congestion, voltage violation, and three-phase unbalance.
Jinli Zhao, Yushuo Wang, Guanyu Song, Peng Li, Chengshan Wang, Jianzhong Wu   +5 more
doaj   +1 more source